better minimalCubiesInRow in case of cuboids - take into account that the shapeshifters can be hollow inside if x>=3, y>=3, z>=3 (e.g. 3x3x5)
better minimalCubiesInRow in case of cuboids - take into account that the shapeshifters can be hollow inside if x>=3, y>=3, z>=3 (e.g. 3x3x5)